90311674785 has 16 divisors (see below), whose sum is σ = 145553417856. Its totient is φ = 47814647168.

The previous prime is 90311674771. The next prime is 90311674787. The reversal of 90311674785 is 58747611309.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 90311674785 - 2¹³ = 90311666593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90311674787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21971589 + ... + 21975698.

It is an arithmetic number, because the mean of its divisors is an integer number (9097088616).

Almost surely, 2^90311674785 is an apocalyptic number.

It is an amenable number.

90311674785 is a deficient number, since it is larger than the sum of its proper divisors (55241743071).

90311674785 is a wasteful number, since it uses less digits than its factorization.

90311674785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43947432.

The product of its (nonzero) digits is 1270080, while the sum is 51.

It can be divided in two parts, 903116 and 74785, that added together give a triangular number (977901 = T₁₃₉₈).

The spelling of 90311674785 in words is "ninety billion, three hundred eleven million, six hundred seventy-four thousand, seven hundred eighty-five".