37661147243 has 2 divisors, whose sum is σ = 37661147244. Its totient is φ = 37661147242.

The previous prime is 37661147159. The next prime is 37661147261. The reversal of 37661147243 is 34274116673.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 37661147243 - 2²² = 37656952939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 37661147194 and 37661147203.

It is not a weakly prime, because it can be changed into another prime (37661147263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18830573621 + 18830573622.

It is an arithmetic number, because the mean of its divisors is an integer number (18830573622).

Almost surely, 2^37661147243 is an apocalyptic number.

37661147243 is a deficient number, since it is larger than the sum of its proper divisors (1).

37661147243 is an equidigital number, since it uses as much as digits as its factorization.

37661147243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 44.

The spelling of 37661147243 in words is "thirty-seven billion, six hundred sixty-one million, one hundred forty-seven thousand, two hundred forty-three".