64825772642 has 16 divisors (see below), whose sum is σ = 101688486912. Its totient is φ = 30935778720.

The previous prime is 64825772629. The next prime is 64825772651. The reversal of 64825772642 is 24627752846.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1520834 + ... + 1562877.

It is an arithmetic number, because the mean of its divisors is an integer number (6355530432).

Almost surely, 2^64825772642 is an apocalyptic number.

64825772642 is a deficient number, since it is larger than the sum of its proper divisors (36862714270).

64825772642 is a wasteful number, since it uses less digits than its factorization.

64825772642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084193.

The product of its digits is 9031680, while the sum is 53.

The spelling of 64825772642 in words is "sixty-four billion, eight hundred twenty-five million, seven hundred seventy-two thousand, six hundred forty-two".