55073587578906 has 48 divisors (see below), whose sum is σ = 125191781928864. Its totient is φ = 16053839286048.

The previous prime is 55073587578883. The next prime is 55073587579013. The reversal of 55073587578906 is 60987578537055.

It is a super-2 number, since 2×55073587578906² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 977910396 + ... + 977966711.

It is an arithmetic number, because the mean of its divisors is an integer number (2608162123518).

Almost surely, 2^{55073587578906} is an apocalyptic number.

55073587578906 is an abundant number, since it is smaller than the sum of its proper divisors (70118194349958).

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

55073587578906 is a wasteful number, since it uses less digits than its factorization.

55073587578906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955877163 (or 1955877144 counting only the distinct ones).

The product of its (nonzero) digits is 2222640000, while the sum is 75.

The spelling of 55073587578906 in words is "fifty-five trillion, seventy-three billion, five hundred eighty-seven million, five hundred seventy-eight thousand, nine hundred six".