55422781569792 has 360 divisors, whose sum is σ = 203397799377696. Its totient is φ = 14616996839424.

The previous prime is 55422781569781. The next prime is 55422781569803. The reversal of 55422781569792 is 29796518722455.

It is a happy number.

55422781569792 is a `hidden beast` number, since 5 + 5 + 422 + 7 + 81 + 56 + 9 + 79 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (55422781569781) and next prime (55422781569803).

It is a super-3 number, since 3×55422781569792³ (a number of 42 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 55422781569792.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12798633 + ... + 16572584.

Almost surely, 2^{55422781569792} is an apocalyptic number.

55422781569792 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55422781569792 is an abundant number, since it is smaller than the sum of its proper divisors (147975017807904).

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

55422781569792 is a wasteful number, since it uses less digits than its factorization.

55422781569792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29371265 (or 29371242 counting only the distinct ones).

The product of its digits is 762048000, while the sum is 72.

The spelling of 55422781569792 in words is "fifty-five trillion, four hundred twenty-two billion, seven hundred eighty-one million, five hundred sixty-nine thousand, seven hundred ninety-two".