61269172290690 has 384 divisors, whose sum is σ = 184795335290880. Its totient is φ = 12726927442944.

The previous prime is 61269172290679. The next prime is 61269172290713. The reversal of 61269172290690 is 9609227196216.

It is a super-2 number, since 2×61269172290690² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4848389052 + ... + 4848401688.

It is an arithmetic number, because the mean of its divisors is an integer number (481237852320).

Almost surely, 2^{61269172290690} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61269172290690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92397667645440).

61269172290690 is an abundant number, since it is smaller than the sum of its proper divisors (123526163000190).

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

61269172290690 is a wasteful number, since it uses less digits than its factorization.

61269172290690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14786 (or 14773 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 60.

The spelling of 61269172290690 in words is "sixty-one trillion, two hundred sixty-nine billion, one hundred seventy-two million, two hundred ninety thousand, six hundred ninety".