61735212272 has 40 divisors (see below), whose sum is σ = 126570470400. Its totient is φ = 29109671360.

The previous prime is 61735212269. The next prime is 61735212283. The reversal of 61735212272 is 27221253716.

It is a super-2 number, since 2×61735212272² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155272 + ... + 1207527.

It is an arithmetic number, because the mean of its divisors is an integer number (3164261760).

Almost surely, 2^61735212272 is an apocalyptic number.

It is an amenable number.

61735212272 is an abundant number, since it is smaller than the sum of its proper divisors (64835258128).

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

61735212272 is a wasteful number, since it uses less digits than its factorization.

61735212272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362901 (or 2362895 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

Adding to 61735212272 its reverse (27221253716), we get a palindrome (88956465988).

The spelling of 61735212272 in words is "sixty-one billion, seven hundred thirty-five million, two hundred twelve thousand, two hundred seventy-two".