154878972980 has 24 divisors (see below), whose sum is σ = 325336768512. Its totient is φ = 61934270112.

The previous prime is 154878972979. The next prime is 154878973033. The reversal of 154878972980 is 89279878451.

It is a self number, because there is not a number n which added to its sum of digits gives 154878972980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1008992 + ... + 1152311.

It is an arithmetic number, because the mean of its divisors is an integer number (13555698688).

Almost surely, 2^154878972980 is an apocalyptic number.

154878972980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154878972980 is an abundant number, since it is smaller than the sum of its proper divisors (170457795532).

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

154878972980 is a wasteful number, since it uses less digits than its factorization.

154878972980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164895 (or 2164893 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 68.

The spelling of 154878972980 in words is "one hundred fifty-four billion, eight hundred seventy-eight million, nine hundred seventy-two thousand, nine hundred eighty".