61264931789 has 64 divisors (see below), whose sum is σ = 69803016192. Its totient is φ = 53511321600.

The previous prime is 61264931759. The next prime is 61264931809. The reversal of 61264931789 is 98713946216.

It is not a de Polignac number, because 61264931789 - 2¹⁶ = 61264866253 is a prime.

It is a super-3 number, since 3×61264931789³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61264931759) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 226069724 + ... + 226069994.

It is an arithmetic number, because the mean of its divisors is an integer number (1090672128).

Almost surely, 2^61264931789 is an apocalyptic number.

It is an amenable number.

61264931789 is a deficient number, since it is larger than the sum of its proper divisors (8538084403).

61264931789 is a wasteful number, since it uses less digits than its factorization.

61264931789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its digits is 3919104, while the sum is 56.

The spelling of 61264931789 in words is "sixty-one billion, two hundred sixty-four million, nine hundred thirty-one thousand, seven hundred eighty-nine".