43257557952 has 112 divisors (see below), whose sum is σ = 145336280320. Its totient is φ = 12359298816.

The previous prime is 43257557899. The next prime is 43257557977. The reversal of 43257557952 is 25975575234.

43257557952 is a `hidden beast` number, since 4 + 32 + 5 + 7 + 557 + 9 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1775998 + ... + 1800189.

It is an arithmetic number, because the mean of its divisors is an integer number (1297645360).

Almost surely, 2^43257557952 is an apocalyptic number.

43257557952 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

43257557952 is an abundant number, since it is smaller than the sum of its proper divisors (102078722368).

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

43257557952 is a wasteful number, since it uses less digits than its factorization.

43257557952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576215 (or 3576199 counting only the distinct ones).

The product of its digits is 13230000, while the sum is 54.

The spelling of 43257557952 in words is "forty-three billion, two hundred fifty-seven million, five hundred fifty-seven thousand, nine hundred fifty-two".