118220393487 has 32 divisors (see below), whose sum is σ = 193661337600. Its totient is φ = 62637319008.

The previous prime is 118220393477. The next prime is 118220393593. The reversal of 118220393487 is 784393022811.

It is a happy number.

It is not a de Polignac number, because 118220393487 - 2⁷ = 118220393359 is a prime.

It is a super-2 number, since 2×118220393487² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118220393407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3133287 + ... + 3170792.

It is an arithmetic number, because the mean of its divisors is an integer number (6051916800).

Almost surely, 2^118220393487 is an apocalyptic number.

118220393487 is a deficient number, since it is larger than the sum of its proper divisors (75440944113).

118220393487 is a wasteful number, since it uses less digits than its factorization.

118220393487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304155.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 118220393487 in words is "one hundred eighteen billion, two hundred twenty million, three hundred ninety-three thousand, four hundred eighty-seven".