61362147531 has 16 divisors (see below), whose sum is σ = 81965352960. Its totient is φ = 40833577920.

The previous prime is 61362147521. The next prime is 61362147569. The reversal of 61362147531 is 13574126316.

It is not a de Polignac number, because 61362147531 - 2⁶ = 61362147467 is a prime.

It is a super-2 number, since 2×61362147531² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61362147531.

It is not an unprimeable number, because it can be changed into a prime (61362147521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5434750 + ... + 5446028.

It is an arithmetic number, because the mean of its divisors is an integer number (5122834560).

Almost surely, 2^61362147531 is an apocalyptic number.

61362147531 is a deficient number, since it is larger than the sum of its proper divisors (20603205429).

61362147531 is a wasteful number, since it uses less digits than its factorization.

61362147531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14426.

The product of its digits is 90720, while the sum is 39.

The spelling of 61362147531 in words is "sixty-one billion, three hundred sixty-two million, one hundred forty-seven thousand, five hundred thirty-one".