39777973385 has 16 divisors (see below), whose sum is σ = 48657853440. Its totient is φ = 31211061120.

The previous prime is 39777973351. The next prime is 39777973399. The reversal of 39777973385 is 58337977793.

It is not a de Polignac number, because 39777973385 - 2¹⁸ = 39777711241 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239081 + ... + 369750.

It is an arithmetic number, because the mean of its divisors is an integer number (3041115840).

Almost surely, 2^39777973385 is an apocalyptic number.

It is an amenable number.

39777973385 is a deficient number, since it is larger than the sum of its proper divisors (8879880055).

39777973385 is a wasteful number, since it uses less digits than its factorization.

39777973385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609088.

The product of its digits is 210039480, while the sum is 68.

The spelling of 39777973385 in words is "thirty-nine billion, seven hundred seventy-seven million, nine hundred seventy-three thousand, three hundred eighty-five".