251148966547 has 2 divisors, whose sum is σ = 251148966548. Its totient is φ = 251148966546.

The previous prime is 251148966533. The next prime is 251148966617. The reversal of 251148966547 is 745669841152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251148966547 - 2²³ = 251140577939 is a prime.

It is a super-2 number, since 2×251148966547² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251148966491 and 251148966500.

It is not a weakly prime, because it can be changed into another prime (251148966347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125574483273 + 125574483274.

It is an arithmetic number, because the mean of its divisors is an integer number (125574483274).

Almost surely, 2^251148966547 is an apocalyptic number.

251148966547 is a deficient number, since it is larger than the sum of its proper divisors (1).

251148966547 is an equidigital number, since it uses as much as digits as its factorization.

251148966547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14515200, while the sum is 58.

The spelling of 251148966547 in words is "two hundred fifty-one billion, one hundred forty-eight million, nine hundred sixty-six thousand, five hundred forty-seven".