70387943508 has 18 divisors (see below), whose sum is σ = 177925079514. Its totient is φ = 23462647824.

The previous prime is 70387943503. The next prime is 70387943567. The reversal of 70387943508 is 80534978307.

It can be written as a sum of positive squares in only one way, i.e., 68645048004 + 1742895504 = 262002^2 + 41748^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70387943501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 977610291 + ... + 977610362.

Almost surely, 2^70387943508 is an apocalyptic number.

It is an amenable number.

70387943508 is an abundant number, since it is smaller than the sum of its proper divisors (107537136006).

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

70387943508 is a wasteful number, since it uses less digits than its factorization.

70387943508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955220663 (or 1955220658 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 70387943508 in words is "seventy billion, three hundred eighty-seven million, nine hundred forty-three thousand, five hundred eight".