37783772328961 has 4 divisors (see below), whose sum is σ = 37873520007124. Its totient is φ = 37694024650800.

The previous prime is 37783772328917. The next prime is 37783772328983. The reversal of 37783772328961 is 16982327738773.

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 18181184323600 + 19602588005361 = 4263940^2 + 4427481^2 .

It is a cyclic number.

It is not a de Polignac number, because 37783772328961 - 2⁷ = 37783772328833 is a prime.

It is a super-2 number, since 2×37783772328961² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37783772328761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44873838450 + ... + 44873839291.

It is an arithmetic number, because the mean of its divisors is an integer number (9468380001781).

Almost surely, 2^{37783772328961} is an apocalyptic number.

It is an amenable number.

37783772328961 is a deficient number, since it is larger than the sum of its proper divisors (89747678163).

37783772328961 is an equidigital number, since it uses as much as digits as its factorization.

37783772328961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89747678162.

The product of its digits is 896168448, while the sum is 73.

The spelling of 37783772328961 in words is "thirty-seven trillion, seven hundred eighty-three billion, seven hundred seventy-two million, three hundred twenty-eight thousand, nine hundred sixty-one".