6155297720 has 384 divisors, whose sum is σ = 17645299200. Its totient is φ = 1910937600.

The previous prime is 6155297717. The next prime is 6155297747. The reversal of 6155297720 is 277925516.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 100906490 + ... + 100906550.

It is an arithmetic number, because the mean of its divisors is an integer number (45951300).

Almost surely, 2^6155297720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6155297720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8822649600).

6155297720 is an abundant number, since it is smaller than the sum of its proper divisors (11490001480).

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

6155297720 is a wasteful number, since it uses less digits than its factorization.

6155297720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 6155297720 is about 78455.7054649310. The cubic root of 6155297720 is about 1832.6647275062.

The spelling of 6155297720 in words is "six billion, one hundred fifty-five million, two hundred ninety-seven thousand, seven hundred twenty".