4291147778507 has 2 divisors, whose sum is σ = 4291147778508. Its totient is φ = 4291147778506.

The previous prime is 4291147778447. The next prime is 4291147778551. The reversal of 4291147778507 is 7058777411924.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4291147778507 - 2¹² = 4291147774411 is a prime.

It is a super-2 number, since 2×4291147778507² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4291147778507.

It is not a weakly prime, because it can be changed into another prime (4291147775507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2145573889253 + 2145573889254.

It is an arithmetic number, because the mean of its divisors is an integer number (2145573889254).

Almost surely, 2^{4291147778507} is an apocalyptic number.

4291147778507 is a deficient number, since it is larger than the sum of its proper divisors (1).

4291147778507 is an equidigital number, since it uses as much as digits as its factorization.

4291147778507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27659520, while the sum is 62.

The spelling of 4291147778507 in words is "four trillion, two hundred ninety-one billion, one hundred forty-seven million, seven hundred seventy-eight thousand, five hundred seven".