61405062264 has 144 divisors (see below), whose sum is σ = 208338759720. Its totient is φ = 16194729600.

The previous prime is 61405062247. The next prime is 61405062281. The reversal of 61405062264 is 46226050416.

61405062264 is a `hidden beast` number, since 6 + 140 + 506 + 2 + 2 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (61405062247) and next prime (61405062281).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 623562 + ... + 715289.

Almost surely, 2^61405062264 is an apocalyptic number.

It is an amenable number.

61405062264 is an abundant number, since it is smaller than the sum of its proper divisors (146933697456).

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

61405062264 is a wasteful number, since it uses less digits than its factorization.

61405062264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338890 (or 1338876 counting only the distinct ones).

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

The spelling of 61405062264 in words is "sixty-one billion, four hundred five million, sixty-two thousand, two hundred sixty-four".