55919197953 has 12 divisors (see below), whose sum is σ = 80774446740. Its totient is φ = 37278416736.

The previous prime is 55919197949. The next prime is 55919197981. The reversal of 55919197953 is 35979191955.

55919197953 is a `hidden beast` number, since 559 + 1 + 9 + 1 + 9 + 79 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31052431089 + 24866766864 = 176217^2 + 157692^2 .

It is not a de Polignac number, because 55919197953 - 2² = 55919197949 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55919197913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384475 + ... + 509567.

It is an arithmetic number, because the mean of its divisors is an integer number (6731203895).

Almost surely, 2^55919197953 is an apocalyptic number.

It is an amenable number.

55919197953 is a deficient number, since it is larger than the sum of its proper divisors (24855248787).

55919197953 is a wasteful number, since it uses less digits than its factorization.

55919197953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174768 (or 174765 counting only the distinct ones).

The product of its digits is 17222625, while the sum is 63.

The spelling of 55919197953 in words is "fifty-five billion, nine hundred nineteen million, one hundred ninety-seven thousand, nine hundred fifty-three".