61330156353 has 6 divisors (see below), whose sum is σ = 88588003634. Its totient is φ = 40886770896.

The previous prime is 61330156331. The next prime is 61330156379. The reversal of 61330156353 is 35365103316.

61330156353 is a `hidden beast` number, since 6 + 1 + 3 + 3 + 0 + 15 + 635 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 35952710544 + 25377445809 = 189612^2 + 159303^2 .

It is not a de Polignac number, because 61330156353 - 2¹³ = 61330148161 is a prime.

It is a super-2 number, since 2×61330156353² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61330156313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3407230900 + ... + 3407230917.

Almost surely, 2^61330156353 is an apocalyptic number.

It is an amenable number.

61330156353 is a deficient number, since it is larger than the sum of its proper divisors (27257847281).

61330156353 is a wasteful number, since it uses less digits than its factorization.

61330156353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814461823 (or 6814461820 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 36.

Adding to 61330156353 its reverse (35365103316), we get a palindrome (96695259669).

The spelling of 61330156353 in words is "sixty-one billion, three hundred thirty million, one hundred fifty-six thousand, three hundred fifty-three".