53956661380 has 24 divisors (see below), whose sum is σ = 114124167360. Its totient is φ = 21427392480.

The previous prime is 53956661357. The next prime is 53956661387. The reversal of 53956661380 is 8316665935.

It is a super-2 number, since 2×53956661380² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53956661387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9701656 + ... + 9707215.

It is an arithmetic number, because the mean of its divisors is an integer number (4755173640).

Almost surely, 2^53956661380 is an apocalyptic number.

It is an amenable number.

53956661380 is an abundant number, since it is smaller than the sum of its proper divisors (60167505980).

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

53956661380 is a wasteful number, since it uses less digits than its factorization.

53956661380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19409019 (or 19409017 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 52.

The spelling of 53956661380 in words is "fifty-three billion, nine hundred fifty-six million, six hundred sixty-one thousand, three hundred eighty".