157006715120705 has 4 divisors (see below), whose sum is σ = 188408058144852. Its totient is φ = 125605372096560.

The previous prime is 157006715120683. The next prime is 157006715120711. The reversal of 157006715120705 is 507021517600751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56811660097201 + 100195055023504 = 7537351^2 + 10009748^2 .

It is not a de Polignac number, because 157006715120705 - 2¹² = 157006715116609 is a prime.

It is a super-2 number, since 2×157006715120705² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157006715120705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15700671512066 + ... + 15700671512075.

It is an arithmetic number, because the mean of its divisors is an integer number (47102014536213).

Almost surely, 2^{157006715120705} is an apocalyptic number.

It is an amenable number.

157006715120705 is a deficient number, since it is larger than the sum of its proper divisors (31401343024147).

157006715120705 is an equidigital number, since it uses as much as digits as its factorization.

157006715120705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31401343024146.

The product of its (nonzero) digits is 514500, while the sum is 47.

The spelling of 157006715120705 in words is "one hundred fifty-seven trillion, six billion, seven hundred fifteen million, one hundred twenty thousand, seven hundred five".