249267355157 has 4 divisors (see below), whose sum is σ = 249439621536. Its totient is φ = 249095088780.

The previous prime is 249267355097. The next prime is 249267355171. The reversal of 249267355157 is 751553762942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 249267355157 - 2²⁶ = 249200246293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249267355957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86131019 + ... + 86133912.

It is an arithmetic number, because the mean of its divisors is an integer number (62359905384).

Almost surely, 2^249267355157 is an apocalyptic number.

It is an amenable number.

249267355157 is a deficient number, since it is larger than the sum of its proper divisors (172266379).

249267355157 is a wasteful number, since it uses less digits than its factorization.

249267355157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172266378.

The product of its digits is 15876000, while the sum is 56.

The spelling of 249267355157 in words is "two hundred forty-nine billion, two hundred sixty-seven million, three hundred fifty-five thousand, one hundred fifty-seven".