45697949491 has 2 divisors, whose sum is σ = 45697949492. Its totient is φ = 45697949490.

The previous prime is 45697949489. The next prime is 45697949501. The reversal of 45697949491 is 19494979654.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45697949491 - 2¹ = 45697949489 is a prime.

It is a super-3 number, since 3×45697949491³ (a number of 33 digits) contains 333 as substring.

Together with 45697949489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45697949471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22848974745 + 22848974746.

It is an arithmetic number, because the mean of its divisors is an integer number (22848974746).

Almost surely, 2^45697949491 is an apocalyptic number.

45697949491 is a deficient number, since it is larger than the sum of its proper divisors (1).

45697949491 is an equidigital number, since it uses as much as digits as its factorization.

45697949491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88179840, while the sum is 67.

The spelling of 45697949491 in words is "forty-five billion, six hundred ninety-seven million, nine hundred forty-nine thousand, four hundred ninety-one".