55640651531402 has 16 divisors (see below), whose sum is σ = 100404183215040. Its totient is φ = 22590941223168.

The previous prime is 55640651531369. The next prime is 55640651531419. The reversal of 55640651531402 is 20413515604655.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104587690583 + ... + 104587691114.

It is an arithmetic number, because the mean of its divisors is an integer number (6275261450940).

Almost surely, 2^{55640651531402} is an apocalyptic number.

55640651531402 is a deficient number, since it is larger than the sum of its proper divisors (44763531683638).

55640651531402 is a wasteful number, since it uses less digits than its factorization.

55640651531402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209175381725.

The product of its (nonzero) digits is 2160000, while the sum is 47.

The spelling of 55640651531402 in words is "fifty-five trillion, six hundred forty billion, six hundred fifty-one million, five hundred thirty-one thousand, four hundred two".