61387320453028 has 24 divisors (see below), whose sum is σ = 108212602028832. Its totient is φ = 30469436837184.

The previous prime is 61387320453023. The next prime is 61387320453031. The reversal of 61387320453028 is 82035402378316.

It is a super-2 number, since 2×61387320453028² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61387320453023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183085351 + ... + 183420337.

It is an arithmetic number, because the mean of its divisors is an integer number (4508858417868).

Almost surely, 2^{61387320453028} is an apocalyptic number.

It is an amenable number.

61387320453028 is a deficient number, since it is larger than the sum of its proper divisors (46825281575804).

61387320453028 is a wasteful number, since it uses less digits than its factorization.

61387320453028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669531 (or 669529 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 61387320453028 in words is "sixty-one trillion, three hundred eighty-seven billion, three hundred twenty million, four hundred fifty-three thousand, twenty-eight".