37977909061 has 4 divisors (see below), whose sum is σ = 39976746400. Its totient is φ = 35979071724.

The previous prime is 37977908977. The next prime is 37977909077. The reversal of 37977909061 is 16090977973.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37977909061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 37977908987 and 37977909005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37977909091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999418641 + ... + 999418678.

It is an arithmetic number, because the mean of its divisors is an integer number (9994186600).

Almost surely, 2^37977909061 is an apocalyptic number.

It is an amenable number.

37977909061 is a deficient number, since it is larger than the sum of its proper divisors (1998837339).

37977909061 is a wasteful number, since it uses less digits than its factorization.

37977909061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998837338.

The product of its (nonzero) digits is 4500846, while the sum is 58.

The spelling of 37977909061 in words is "thirty-seven billion, nine hundred seventy-seven million, nine hundred nine thousand, sixty-one".