64404154031 has 16 divisors (see below), whose sum is σ = 75072987648. Its totient is φ = 54111372000.

The previous prime is 64404154027. The next prime is 64404154049. The reversal of 64404154031 is 13045140446.

It is not a de Polignac number, because 64404154031 - 2² = 64404154027 is a prime.

It is a super-2 number, since 2×64404154031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64404154051) 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, 288545 + ... + 460506.

It is an arithmetic number, because the mean of its divisors is an integer number (4692061728).

Almost surely, 2^64404154031 is an apocalyptic number.

64404154031 is a deficient number, since it is larger than the sum of its proper divisors (10668833617).

64404154031 is a wasteful number, since it uses less digits than its factorization.

64404154031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749302.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 64404154031 its reverse (13045140446), we get a palindrome (77449294477).

It can be divided in two parts, 6440415 and 4031, that added together give a palindrome (6444446).

The spelling of 64404154031 in words is "sixty-four billion, four hundred four million, one hundred fifty-four thousand, thirty-one".