49215249431 has 2 divisors, whose sum is σ = 49215249432. Its totient is φ = 49215249430.

The previous prime is 49215249403. The next prime is 49215249487. The reversal of 49215249431 is 13494251294.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49215249431 - 2²⁶ = 49148140567 is a prime.

It is a super-2 number, since 2×49215249431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49215249331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24607624715 + 24607624716.

It is an arithmetic number, because the mean of its divisors is an integer number (24607624716).

Almost surely, 2^49215249431 is an apocalyptic number.

49215249431 is a deficient number, since it is larger than the sum of its proper divisors (1).

49215249431 is an equidigital number, since it uses as much as digits as its factorization.

49215249431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 44.

The spelling of 49215249431 in words is "forty-nine billion, two hundred fifteen million, two hundred forty-nine thousand, four hundred thirty-one".