7256406353880 has 32 divisors (see below), whose sum is σ = 21769219062000. Its totient is φ = 1935041694336.

The previous prime is 7256406353813. The next prime is 7256406353881. The reversal of 7256406353880 is 883536046527.

It is a self number, because there is not a number n which added to its sum of digits gives 7256406353880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7256406353881) 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, 30235026355 + ... + 30235026594.

Almost surely, 2^{7256406353880} is an apocalyptic number.

It is an amenable number.

7256406353880 is an abundant number, since it is smaller than the sum of its proper divisors (14512812708120).

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

7256406353880 is a wasteful number, since it uses less digits than its factorization.

7256406353880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60470052963 (or 60470052959 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 57.

The spelling of 7256406353880 in words is "seven trillion, two hundred fifty-six billion, four hundred six million, three hundred fifty-three thousand, eight hundred eighty".