70421311537 has 2 divisors, whose sum is σ = 70421311538. Its totient is φ = 70421311536.

The previous prime is 70421311531. The next prime is 70421311577. The reversal of 70421311537 is 73511312407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54300184576 + 16121126961 = 233024^2 + 126969^2 .

It is a cyclic number.

It is not a de Polignac number, because 70421311537 - 2¹⁹ = 70420787249 is a prime.

It is a super-2 number, since 2×70421311537² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70421311531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35210655768 + 35210655769.

It is an arithmetic number, because the mean of its divisors is an integer number (35210655769).

Almost surely, 2^70421311537 is an apocalyptic number.

It is an amenable number.

70421311537 is a deficient number, since it is larger than the sum of its proper divisors (1).

70421311537 is an equidigital number, since it uses as much as digits as its factorization.

70421311537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The spelling of 70421311537 in words is "seventy billion, four hundred twenty-one million, three hundred eleven thousand, five hundred thirty-seven".