70021712015151 has 16 divisors (see below), whose sum is σ = 101673704573280. Its totient is φ = 42606123816960.

The previous prime is 70021712015137. The next prime is 70021712015153. The reversal of 70021712015151 is 15151021712007.

It is not a de Polignac number, because 70021712015151 - 2⁷ = 70021712015023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70021712015153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10086673570 + ... + 10086680511.

It is an arithmetic number, because the mean of its divisors is an integer number (6354606535830).

Almost surely, 2^{70021712015151} is an apocalyptic number.

70021712015151 is a deficient number, since it is larger than the sum of its proper divisors (31651992558129).

70021712015151 is a wasteful number, since it uses less digits than its factorization.

70021712015151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20173354186.

The product of its (nonzero) digits is 4900, while the sum is 33.

Adding to 70021712015151 its reverse (15151021712007), we get a palindrome (85172733727158).

The spelling of 70021712015151 in words is "seventy trillion, twenty-one billion, seven hundred twelve million, fifteen thousand, one hundred fifty-one".