70899401663 has 32 divisors (see below), whose sum is σ = 81330573312. Its totient is φ = 61409779200.

The previous prime is 70899401647. The next prime is 70899401693. The reversal of 70899401663 is 36610499807.

It is not a de Polignac number, because 70899401663 - 2⁴ = 70899401647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70899401693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2080028 + ... + 2113838.

It is an arithmetic number, because the mean of its divisors is an integer number (2541580416).

Almost surely, 2^70899401663 is an apocalyptic number.

70899401663 is a deficient number, since it is larger than the sum of its proper divisors (10431171649).

70899401663 is a wasteful number, since it uses less digits than its factorization.

70899401663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34055.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 70899401663 in words is "seventy billion, eight hundred ninety-nine million, four hundred one thousand, six hundred sixty-three".