70821875487 has 16 divisors (see below), whose sum is σ = 103019724288. Its totient is φ = 42919812480.

The previous prime is 70821875431. The next prime is 70821875503. The reversal of 70821875487 is 78457812807.

It is not a de Polignac number, because 70821875487 - 2⁷ = 70821875359 is a prime.

It is a super-2 number, since 2×70821875487² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70821870487) 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, 610378 + ... + 717080.

It is an arithmetic number, because the mean of its divisors is an integer number (6438732768).

Almost surely, 2^70821875487 is an apocalyptic number.

70821875487 is a deficient number, since it is larger than the sum of its proper divisors (32197848801).

70821875487 is a wasteful number, since it uses less digits than its factorization.

70821875487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126830.

The product of its (nonzero) digits is 7024640, while the sum is 57.

The spelling of 70821875487 in words is "seventy billion, eight hundred twenty-one million, eight hundred seventy-five thousand, four hundred eighty-seven".