61275616603149 has 32 divisors (see below), whose sum is σ = 88252415274240. Its totient is φ = 37593731814912.

The previous prime is 61275616603141. The next prime is 61275616603183. The reversal of 61275616603149 is 94130661657216.

It is a happy number.

It is not a de Polignac number, because 61275616603149 - 2³ = 61275616603141 is a prime.

It is a super-2 number, since 2×61275616603149² (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 (61275616603141) 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, 56262679 + ... + 57341435.

It is an arithmetic number, because the mean of its divisors is an integer number (2757887977320).

Almost surely, 2^{61275616603149} is an apocalyptic number.

It is an amenable number.

61275616603149 is a deficient number, since it is larger than the sum of its proper divisors (26976798671091).

61275616603149 is a wasteful number, since it uses less digits than its factorization.

61275616603149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083189.

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 61275616603149 in words is "sixty-one trillion, two hundred seventy-five billion, six hundred sixteen million, six hundred three thousand, one hundred forty-nine".