90264484628638 has 16 divisors (see below), whose sum is σ = 136605690456480. Its totient is φ = 44729317414656.

The previous prime is 90264484628629. The next prime is 90264484628651. The reversal of 90264484628638 is 83682648446209.

It is a happy number.

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, 12858618 + ... + 18597661.

It is an arithmetic number, because the mean of its divisors is an integer number (8537855653530).

Almost surely, 2^{90264484628638} is an apocalyptic number.

90264484628638 is a deficient number, since it is larger than the sum of its proper divisors (46341205827842).

90264484628638 is a wasteful number, since it uses less digits than its factorization.

90264484628638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31469091.

The product of its (nonzero) digits is 764411904, while the sum is 70.

The spelling of 90264484628638 in words is "ninety trillion, two hundred sixty-four billion, four hundred eighty-four million, six hundred twenty-eight thousand, six hundred thirty-eight".