64013461477 has 12 divisors (see below), whose sum is σ = 74486985996. Its totient is φ = 54852215040.

The previous prime is 64013461453. The next prime is 64013461481. The reversal of 64013461477 is 77416431046.

It can be written as a sum of positive squares in 2 ways, for example, as 18257684641 + 45755776836 = 135121^2 + 213906^2 .

It is not a de Polignac number, because 64013461477 - 2²⁷ = 63879243749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64013461487) 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, 29658 + ... + 359035.

It is an arithmetic number, because the mean of its divisors is an integer number (6207248833).

Almost surely, 2^64013461477 is an apocalyptic number.

It is an amenable number.

64013461477 is a deficient number, since it is larger than the sum of its proper divisors (10473524519).

64013461477 is a wasteful number, since it uses less digits than its factorization.

64013461477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392068 (or 392061 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 64013461477 in words is "sixty-four billion, thirteen million, four hundred sixty-one thousand, four hundred seventy-seven".