90078311953 has 12 divisors (see below), whose sum is σ = 110299974960. Its totient is φ = 73146297672.

The previous prime is 90078311861. The next prime is 90078311989. The reversal of 90078311953 is 35911387009.

It is a happy number.

It is not a de Polignac number, because 90078311953 - 2⁹ = 90078311441 is a prime.

It is a super-2 number, since 2×90078311953² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90078311993) 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 11 ways as a sum of consecutive naturals, for example, 48376251 + ... + 48378112.

It is an arithmetic number, because the mean of its divisors is an integer number (9191664580).

Almost surely, 2^90078311953 is an apocalyptic number.

It is an amenable number.

90078311953 is a deficient number, since it is larger than the sum of its proper divisors (20221663007).

90078311953 is a wasteful number, since it uses less digits than its factorization.

90078311953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96754396 (or 96754389 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 90078311953 in words is "ninety billion, seventy-eight million, three hundred eleven thousand, nine hundred fifty-three".