78162033437 has 2 divisors, whose sum is σ = 78162033438. Its totient is φ = 78162033436.

The previous prime is 78162033413. The next prime is 78162033533. The reversal of 78162033437 is 73433026187.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67677502201 + 10484531236 = 260149^2 + 102394^2 .

It is a cyclic number.

It is not a de Polignac number, because 78162033437 - 2⁸ = 78162033181 is a prime.

It is a super-2 number, since 2×78162033437² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78162023437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39081016718 + 39081016719.

It is an arithmetic number, because the mean of its divisors is an integer number (39081016719).

Almost surely, 2^78162033437 is an apocalyptic number.

It is an amenable number.

78162033437 is a deficient number, since it is larger than the sum of its proper divisors (1).

78162033437 is an equidigital number, since it uses as much as digits as its factorization.

78162033437 is an evil number, because the sum of its binary digits is even.

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

The spelling of 78162033437 in words is "seventy-eight billion, one hundred sixty-two million, thirty-three thousand, four hundred thirty-seven".