70402131556 has 9 divisors (see below), whose sum is σ = 123204658899. Its totient is φ = 35200800444.

The previous prime is 70402131529. The next prime is 70402131557. The reversal of 70402131556 is 65513120407.

The square root of 70402131556 is 265334.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×70402131556² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70402131557) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 464335 + ... + 597001.

Almost surely, 2^70402131556 is an apocalyptic number.

70402131556 is the 265334-th square number.

It is an amenable number.

70402131556 is a deficient number, since it is larger than the sum of its proper divisors (52802527343).

70402131556 is an frugal number, since it uses more digits than its factorization.

70402131556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265338 (or 132669 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The spelling of 70402131556 in words is "seventy billion, four hundred two million, one hundred thirty-one thousand, five hundred fifty-six".