61397148100 has 36 divisors (see below), whose sum is σ = 136066541184. Its totient is φ = 24036328480.

The previous prime is 61397148091. The next prime is 61397148101. The reversal of 61397148100 is 184179316.

It is a super-2 number, since 2×61397148100² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61397148101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6526912 + ... + 6536311.

It is an arithmetic number, because the mean of its divisors is an integer number (3779626144).

Almost surely, 2^61397148100 is an apocalyptic number.

It is an amenable number.

61397148100 is an abundant number, since it is smaller than the sum of its proper divisors (74669393084).

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

61397148100 is a wasteful number, since it uses less digits than its factorization.

61397148100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13063284 (or 13063277 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 61397148100 in words is "sixty-one billion, three hundred ninety-seven million, one hundred forty-eight thousand, one hundred".