53978864324670 has 256 divisors, whose sum is σ = 145205140561920. Its totient is φ = 14268787932672.

The previous prime is 53978864324663. The next prime is 53978864324701. The reversal of 53978864324670 is 7642346887935.

53978864324670 is a `hidden beast` number, since 5 + 3 + 9 + 7 + 8 + 86 + 432 + 46 + 70 = 666.

It is a super-2 number, since 2×53978864324670² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 37933143579 + ... + 37933145001.

It is an arithmetic number, because the mean of its divisors is an integer number (567207580320).

Almost surely, 2^{53978864324670} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53978864324670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72602570280960).

53978864324670 is an abundant number, since it is smaller than the sum of its proper divisors (91226276237250).

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

53978864324670 is a wasteful number, since it uses less digits than its factorization.

53978864324670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448 (or 3442 counting only the distinct ones).

The product of its (nonzero) digits is 1463132160, while the sum is 72.

The spelling of 53978864324670 in words is "fifty-three trillion, nine hundred seventy-eight billion, eight hundred sixty-four million, three hundred twenty-four thousand, six hundred seventy".