1018180972506 has 32 divisors (see below), whose sum is σ = 2039820330240. Its totient is φ = 338817613824.

The previous prime is 1018180972483. The next prime is 1018180972553. The reversal of 1018180972506 is 6052790818101.

It is a happy number.

1018180972506 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11921551 + ... + 12006653.

It is an arithmetic number, because the mean of its divisors is an integer number (63744385320).

Almost surely, 2^{1018180972506} is an apocalyptic number.

1018180972506 is an abundant number, since it is smaller than the sum of its proper divisors (1021639357734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1018180972506 is a wasteful number, since it uses less digits than its factorization.

1018180972506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88470.

The product of its (nonzero) digits is 241920, while the sum is 48.

The spelling of 1018180972506 in words is "one trillion, eighteen billion, one hundred eighty million, nine hundred seventy-two thousand, five hundred six".