61501368428 has 12 divisors (see below), whose sum is σ = 107699979240. Its totient is φ = 30729945792.

The previous prime is 61501368407. The next prime is 61501368463. The reversal of 61501368428 is 82486310516.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5177933 + ... + 5189796.

It is an arithmetic number, because the mean of its divisors is an integer number (8974998270).

Almost surely, 2^61501368428 is an apocalyptic number.

It is an amenable number.

61501368428 is a deficient number, since it is larger than the sum of its proper divisors (46198610812).

61501368428 is a wasteful number, since it uses less digits than its factorization.

61501368428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10369216 (or 10369214 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 61501368428 in words is "sixty-one billion, five hundred one million, three hundred sixty-eight thousand, four hundred twenty-eight".