7981097502 has 32 divisors (see below), whose sum is σ = 18409881600. Its totient is φ = 2259391968.

The previous prime is 7981097489. The next prime is 7981097503. The reversal of 7981097502 is 2057901897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7981097503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867102 + ... + 876257.

It is an arithmetic number, because the mean of its divisors is an integer number (575308800).

Almost surely, 2^7981097502 is an apocalyptic number.

7981097502 is an abundant number, since it is smaller than the sum of its proper divisors (10428784098).

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

7981097502 is a wasteful number, since it uses less digits than its factorization.

7981097502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743480.

The product of its (nonzero) digits is 317520, while the sum is 48.

The square root of 7981097502 is about 89336.9884314442. The cubic root of 7981097502 is about 1998.4235495618.

The spelling of 7981097502 in words is "seven billion, nine hundred eighty-one million, ninety-seven thousand, five hundred two".