366121451520 has 1296 divisors, whose sum is σ = 1522904029920. Its totient is φ = 84085309440.

The previous prime is 366121451483. The next prime is 366121451537. The reversal of 366121451520 is 25154121663.

366121451520 is a `hidden beast` number, since 3 + 6 + 6 + 121 + 4 + 5 + 1 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (1296).

It is a super-2 number, since 2×366121451520² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 19269550071 + ... + 19269550089.

It is an arithmetic number, because the mean of its divisors is an integer number (1175080270).

Almost surely, 2^366121451520 is an apocalyptic number.

366121451520 is a gapful number since it is divisible by the number (30) 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 366121451520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (761452014960).

366121451520 is an abundant number, since it is smaller than the sum of its proper divisors (1156782578400).

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

366121451520 is an frugal number, since it uses more digits than its factorization.

366121451520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 366121451520 in words is "three hundred sixty-six billion, one hundred twenty-one million, four hundred fifty-one thousand, five hundred twenty".