55019400154072 has 32 divisors (see below), whose sum is σ = 107103930152400. Its totient is φ = 26465201288064.

The previous prime is 55019400154067. The next prime is 55019400154073. The reversal of 55019400154072 is 27045100491055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55019400154073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428008998 + ... + 428137525.

Almost surely, 2^{55019400154072} is an apocalyptic number.

It is an amenable number.

55019400154072 is a deficient number, since it is larger than the sum of its proper divisors (52084529998328).

55019400154072 is a wasteful number, since it uses less digits than its factorization.

55019400154072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856146835 (or 856146831 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 55019400154072 in words is "fifty-five trillion, nineteen billion, four hundred million, one hundred fifty-four thousand, seventy-two".