973155978990 has 48 divisors (see below), whose sum is σ = 2724836744448. Its totient is φ = 239546086848.

The previous prime is 973155978953. The next prime is 973155978997. The reversal of 973155978990 is 99879551379.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (973155978997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 415877454 + ... + 415879793.

It is an arithmetic number, because the mean of its divisors is an integer number (56767432176).

Almost surely, 2^973155978990 is an apocalyptic number.

973155978990 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

973155978990 is an abundant number, since it is smaller than the sum of its proper divisors (1751680765458).

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

973155978990 is a wasteful number, since it uses less digits than its factorization.

973155978990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831757273 (or 831757270 counting only the distinct ones).

The product of its (nonzero) digits is 192893400, while the sum is 72.

The spelling of 973155978990 in words is "nine hundred seventy-three billion, one hundred fifty-five million, nine hundred seventy-eight thousand, nine hundred ninety".