61501368429 has 12 divisors (see below), whose sum is σ = 88838744800. Its totient is φ = 40999326984.

The previous prime is 61501368407. The next prime is 61501368463. The reversal of 61501368429 is 92486310516.

61501368429 is a `hidden beast` number, since 6 + 150 + 13 + 68 + 429 = 666.

It is not a de Polignac number, because 61501368429 - 2²⁴ = 61484591213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61501368479) 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, 143952 + ... + 379110.

Almost surely, 2^61501368429 is an apocalyptic number.

It is an amenable number.

61501368429 is a deficient number, since it is larger than the sum of its proper divisors (27337376371).

61501368429 is a wasteful number, since it uses less digits than its factorization.

61501368429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264224 (or 264221 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 61501368429 in words is "sixty-one billion, five hundred one million, three hundred sixty-eight thousand, four hundred twenty-nine".