36961978663 has 8 divisors (see below), whose sum is σ = 39160595232. Its totient is φ = 34766071296.

The previous prime is 36961978639. The next prime is 36961978667. The reversal of 36961978663 is 36687916963.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36961978663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36961978595 and 36961978604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36961978667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649170 + ... + 703807.

It is an arithmetic number, because the mean of its divisors is an integer number (4895074404).

Almost surely, 2^36961978663 is an apocalyptic number.

36961978663 is a deficient number, since it is larger than the sum of its proper divisors (2198616569).

36961978663 is a wasteful number, since it uses less digits than its factorization.

36961978663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354601.

The product of its digits is 52907904, while the sum is 64.

The spelling of 36961978663 in words is "thirty-six billion, nine hundred sixty-one million, nine hundred seventy-eight thousand, six hundred sixty-three".