55878969901 has 16 divisors (see below), whose sum is σ = 56564720640. Its totient is φ = 55198854720.

The previous prime is 55878969871. The next prime is 55878969919. The reversal of 55878969901 is 10996987855.

It is a cyclic number.

It is not a de Polignac number, because 55878969901 - 2¹⁵ = 55878937133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55878969101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16476916 + ... + 16480306.

It is an arithmetic number, because the mean of its divisors is an integer number (3535295040).

Almost surely, 2^55878969901 is an apocalyptic number.

It is an amenable number.

55878969901 is a deficient number, since it is larger than the sum of its proper divisors (685750739).

55878969901 is a wasteful number, since it uses less digits than its factorization.

55878969901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4164.

The product of its (nonzero) digits is 48988800, while the sum is 67.

The spelling of 55878969901 in words is "fifty-five billion, eight hundred seventy-eight million, nine hundred sixty-nine thousand, nine hundred one".