90013640747 has 16 divisors (see below), whose sum is σ = 91863475200. Its totient is φ = 88181200800.

The previous prime is 90013640671. The next prime is 90013640767. The reversal of 90013640747 is 74704631009.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90013640747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90013640767) 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 15 ways as a sum of consecutive naturals, for example, 11624297 + ... + 11632037.

It is an arithmetic number, because the mean of its divisors is an integer number (5741467200).

Almost surely, 2^90013640747 is an apocalyptic number.

90013640747 is a deficient number, since it is larger than the sum of its proper divisors (1849834453).

90013640747 is a wasteful number, since it uses less digits than its factorization.

90013640747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8834.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 90013640747 in words is "ninety billion, thirteen million, six hundred forty thousand, seven hundred forty-seven".