157806028534487 has 2 divisors, whose sum is σ = 157806028534488. Its totient is φ = 157806028534486.

The previous prime is 157806028534457. The next prime is 157806028534493. The reversal of 157806028534487 is 784435820608751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157806028534487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157806028534457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78903014267243 + 78903014267244.

It is an arithmetic number, because the mean of its divisors is an integer number (78903014267244).

Almost surely, 2^{157806028534487} is an apocalyptic number.

157806028534487 is a deficient number, since it is larger than the sum of its proper divisors (1).

157806028534487 is an equidigital number, since it uses as much as digits as its factorization.

157806028534487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 361267200, while the sum is 68.

The spelling of 157806028534487 in words is "one hundred fifty-seven trillion, eight hundred six billion, twenty-eight million, five hundred thirty-four thousand, four hundred eighty-seven".