84118151690 has 16 divisors (see below), whose sum is σ = 160319301192. Its totient is φ = 31668009984.

The previous prime is 84118151671. The next prime is 84118151699. The reversal of 84118151690 is 9615181148.

It can be written as a sum of positive squares in 4 ways, for example, as 67745157841 + 16372993849 = 260279^2 + 127957^2 .

It is a super-2 number, since 2×84118151690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84118151699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247406159 + ... + 247406498.

Almost surely, 2^84118151690 is an apocalyptic number.

84118151690 is a deficient number, since it is larger than the sum of its proper divisors (76201149502).

84118151690 is a wasteful number, since it uses less digits than its factorization.

84118151690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494812681.

The product of its (nonzero) digits is 69120, while the sum is 44.

The spelling of 84118151690 in words is "eighty-four billion, one hundred eighteen million, one hundred fifty-one thousand, six hundred ninety".