37897997677 has 4 divisors (see below), whose sum is σ = 40127291676. Its totient is φ = 35668703680.

The previous prime is 37897997671. The next prime is 37897997681. The reversal of 37897997677 is 77679979873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10383813801 + 27514183876 = 101901^2 + 165874^2 .

It is not a de Polignac number, because 37897997677 - 2¹⁹ = 37897473389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 37897997597 and 37897997606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37897997671) 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, 1114646974 + ... + 1114647007.

It is an arithmetic number, because the mean of its divisors is an integer number (10031822919).

Almost surely, 2^37897997677 is an apocalyptic number.

It is an amenable number.

37897997677 is a deficient number, since it is larger than the sum of its proper divisors (2229293999).

37897997677 is a wasteful number, since it uses less digits than its factorization.

37897997677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229293998.

The product of its digits is 1764331632, while the sum is 79.

The spelling of 37897997677 in words is "thirty-seven billion, eight hundred ninety-seven million, nine hundred ninety-seven thousand, six hundred seventy-seven".