61496357481 has 24 divisors (see below), whose sum is σ = 101288121480. Its totient is φ = 35617798656.

The previous prime is 61496357473. The next prime is 61496357497. The reversal of 61496357481 is 18475369416.

61496357481 is a `hidden beast` number, since 6 + 1 + 4 + 9 + 63 + 574 + 8 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8832992256 + 52663365225 = 93984^2 + 229485^2 .

It is not a de Polignac number, because 61496357481 - 2³ = 61496357473 is a prime.

It is a super-2 number, since 2×61496357481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61496357401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15457126 + ... + 15461103.

It is an arithmetic number, because the mean of its divisors is an integer number (4220338395).

Almost surely, 2^61496357481 is an apocalyptic number.

It is an amenable number.

61496357481 is a deficient number, since it is larger than the sum of its proper divisors (39791763999).

61496357481 is a wasteful number, since it uses less digits than its factorization.

61496357481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30918265 (or 30918262 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 61496357481 in words is "sixty-one billion, four hundred ninety-six million, three hundred fifty-seven thousand, four hundred eighty-one".