61451425066108 has 96 divisors (see below), whose sum is σ = 139617681638400. Its totient is φ = 22963433472000.

The previous prime is 61451425066103. The next prime is 61451425066147. The reversal of 61451425066108 is 80166052415416.

It is a super-2 number, since 2×61451425066108² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61451425066103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21432453 + ... + 24129916.

It is an arithmetic number, because the mean of its divisors is an integer number (1454350850400).

Almost surely, 2^{61451425066108} is an apocalyptic number.

It is an amenable number.

61451425066108 is an abundant number, since it is smaller than the sum of its proper divisors (78166256572292).

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

61451425066108 is a wasteful number, since it uses less digits than its factorization.

61451425066108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45562571 (or 45562569 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 61451425066108 in words is "sixty-one trillion, four hundred fifty-one billion, four hundred twenty-five million, sixty-six thousand, one hundred eight".