55511640342 has 48 divisors (see below), whose sum is σ = 120611731968. Its totient is φ = 18452174640.

The previous prime is 55511640337. The next prime is 55511640347. The reversal of 55511640342 is 24304611555.

55511640342 is a `hidden beast` number, since 5 + 5 + 5 + 1 + 1 + 640 + 3 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (55511640337) and next prime (55511640347).

It is a junction number, because it is equal to n+sod(n) for n = 55511640297 and 55511640306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55511640347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21827923 + ... + 21830465.

It is an arithmetic number, because the mean of its divisors is an integer number (2512744416).

Almost surely, 2^55511640342 is an apocalyptic number.

55511640342 is an abundant number, since it is smaller than the sum of its proper divisors (65100091626).

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

55511640342 is a wasteful number, since it uses less digits than its factorization.

55511640342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5465 (or 5462 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 55511640342 in words is "fifty-five billion, five hundred eleven million, six hundred forty thousand, three hundred forty-two".