918071218972 has 72 divisors (see below), whose sum is σ = 1700679482880. Its totient is φ = 433491004800.

The previous prime is 918071218957. The next prime is 918071219029. The reversal of 918071218972 is 279812170819.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 29764054 + ... + 29794882.

Almost surely, 2^918071218972 is an apocalyptic number.

It is an amenable number.

918071218972 is a deficient number, since it is larger than the sum of its proper divisors (782608263908).

918071218972 is a wasteful number, since it uses less digits than its factorization.

918071218972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31083 (or 31050 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 55.

The spelling of 918071218972 in words is "nine hundred eighteen billion, seventy-one million, two hundred eighteen thousand, nine hundred seventy-two".