54640261602 has 24 divisors (see below), whose sum is σ = 119607724236. Its totient is φ = 18025652736.

The previous prime is 54640261597. The next prime is 54640261603. The reversal of 54640261602 is 20616204645.

54640261602 is a `hidden beast` number, since 5 + 4 + 6 + 40 + 2 + 6 + 1 + 602 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 52029153801 + 2611107801 = 228099^2 + 51099^2 .

It is not an unprimeable number, because it can be changed into a prime (54640261603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15645523 + ... + 15649014.

Almost surely, 2^54640261602 is an apocalyptic number.

54640261602 is an abundant number, since it is smaller than the sum of its proper divisors (64967462634).

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

54640261602 is a wasteful number, since it uses less digits than its factorization.

54640261602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31294642 (or 31294639 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 54640261602 in words is "fifty-four billion, six hundred forty million, two hundred sixty-one thousand, six hundred two".