70389987734 has 16 divisors (see below), whose sum is σ = 115249611456. Its totient is φ = 31977117000.

The previous prime is 70389987673. The next prime is 70389987751. The reversal of 70389987734 is 43778998307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877292 + ... + 954159.

It is an arithmetic number, because the mean of its divisors is an integer number (7203100716).

Almost surely, 2^70389987734 is an apocalyptic number.

70389987734 is a deficient number, since it is larger than the sum of its proper divisors (44859623722).

70389987734 is a wasteful number, since it uses less digits than its factorization.

70389987734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833211.

The product of its (nonzero) digits is 64012032, while the sum is 65.

The spelling of 70389987734 in words is "seventy billion, three hundred eighty-nine million, nine hundred eighty-seven thousand, seven hundred thirty-four".