749270436557 has 2 divisors, whose sum is σ = 749270436558. Its totient is φ = 749270436556.

The previous prime is 749270436437. The next prime is 749270436581. The reversal of 749270436557 is 755634072947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 737341646596 + 11928789961 = 858686^2 + 109219^2 .

It is a cyclic number.

It is not a de Polignac number, because 749270436557 - 2⁸ = 749270436301 is a prime.

It is a super-2 number, since 2×749270436557² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 749270436496 and 749270436505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (749270436157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374635218278 + 374635218279.

It is an arithmetic number, because the mean of its divisors is an integer number (374635218279).

Almost surely, 2^749270436557 is an apocalyptic number.

It is an amenable number.

749270436557 is a deficient number, since it is larger than the sum of its proper divisors (1).

749270436557 is an equidigital number, since it uses as much as digits as its factorization.

749270436557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44452800, while the sum is 59.

The spelling of 749270436557 in words is "seven hundred forty-nine billion, two hundred seventy million, four hundred thirty-six thousand, five hundred fifty-seven".