150939397657 has 2 divisors, whose sum is σ = 150939397658. Its totient is φ = 150939397656.

The previous prime is 150939397627. The next prime is 150939397663. The reversal of 150939397657 is 756793939051.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118228696336 + 32710701321 = 343844^2 + 180861^2 .

It is a cyclic number.

It is not a de Polignac number, because 150939397657 - 2⁷ = 150939397529 is a prime.

It is not a weakly prime, because it can be changed into another prime (150939397627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75469698828 + 75469698829.

It is an arithmetic number, because the mean of its divisors is an integer number (75469698829).

Almost surely, 2^150939397657 is an apocalyptic number.

It is an amenable number.

150939397657 is a deficient number, since it is larger than the sum of its proper divisors (1).

150939397657 is an equidigital number, since it uses as much as digits as its factorization.

150939397657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48223350, while the sum is 64.

The spelling of 150939397657 in words is "one hundred fifty billion, nine hundred thirty-nine million, three hundred ninety-seven thousand, six hundred fifty-seven".