40777837064 has 8 divisors (see below), whose sum is σ = 76458444510. Its totient is φ = 20388918528.

The previous prime is 40777837063. The next prime is 40777837231. The reversal of 40777837064 is 46073877704.

It can be written as a sum of positive squares in only one way, i.e., 36240736900 + 4537100164 = 190370^2 + 67358^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 40777836997 and 40777837015.

It is not an unprimeable number, because it can be changed into a prime (40777837063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2548614809 + ... + 2548614824.

Almost surely, 2^40777837064 is an apocalyptic number.

It is an amenable number.

40777837064 is a deficient number, since it is larger than the sum of its proper divisors (35680607446).

40777837064 is a wasteful number, since it uses less digits than its factorization.

40777837064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097229639 (or 5097229635 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 53.

The spelling of 40777837064 in words is "forty billion, seven hundred seventy-seven million, eight hundred thirty-seven thousand, sixty-four".