247377047157 has 24 divisors (see below), whose sum is σ = 369681731328. Its totient is φ = 159237748800.

The previous prime is 247377047107. The next prime is 247377047237. The reversal of 247377047157 is 751740773742.

247377047157 is a `hidden beast` number, since 24 + 7 + 37 + 70 + 471 + 57 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-247377047157 is a prime.

It is a super-2 number, since 2×247377047157² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247377047107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 877144 + ... + 1124337.

It is an arithmetic number, because the mean of its divisors is an integer number (15403405472).

Almost surely, 2^247377047157 is an apocalyptic number.

It is an amenable number.

247377047157 is a deficient number, since it is larger than the sum of its proper divisors (122304684171).

247377047157 is a wasteful number, since it uses less digits than its factorization.

247377047157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001961 (or 2001958 counting only the distinct ones).

The product of its (nonzero) digits is 8067360, while the sum is 54.

The spelling of 247377047157 in words is "two hundred forty-seven billion, three hundred seventy-seven million, forty-seven thousand, one hundred fifty-seven".