6129861131520 has 2880 divisors, whose sum is σ = 28377757900800. Its totient is φ = 1229747650560.

The previous prime is 6129861131509. The next prime is 6129861131543. The reversal of 6129861131520 is 251311689216.

It is a happy number.

6129861131520 is a `hidden beast` number, since 6 + 1 + 2 + 9 + 8 + 6 + 113 + 1 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (2880).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 18519217755 + ... + 18519218085.

It is an arithmetic number, because the mean of its divisors is an integer number (9853388160).

Almost surely, 2^{6129861131520} is an apocalyptic number.

6129861131520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6129861131520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14188878950400).

6129861131520 is an abundant number, since it is smaller than the sum of its proper divisors (22247896769280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6129861131520 is a wasteful number, since it uses less digits than its factorization.

6129861131520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 6129861131520 in words is "six trillion, one hundred twenty-nine billion, eight hundred sixty-one million, one hundred thirty-one thousand, five hundred twenty".