55619274575956 has 288 divisors, whose sum is σ = 127448933673600. Its totient is φ = 21029781427200.

The previous prime is 55619274575939. The next prime is 55619274576001. The reversal of 55619274575956 is 65957547291655.

It is a happy number.

It is a super-2 number, since 2×55619274575956² (a number of 28 digits) contains 22 as substring.

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, 9505940431 + ... + 9505946281.

It is an arithmetic number, because the mean of its divisors is an integer number (442531019700).

Almost surely, 2^{55619274575956} 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 55619274575956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63724466836800).

55619274575956 is an abundant number, since it is smaller than the sum of its proper divisors (71829659097644).

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

55619274575956 is a wasteful number, since it uses less digits than its factorization.

55619274575956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7687 (or 7678 counting only the distinct ones).

The product of its digits is 3572100000, while the sum is 76.

The spelling of 55619274575956 in words is "fifty-five trillion, six hundred nineteen billion, two hundred seventy-four million, five hundred seventy-five thousand, nine hundred fifty-six".