70261520587 has 4 divisors (see below), whose sum is σ = 70302925656. Its totient is φ = 70220115520.

The previous prime is 70261520579. The next prime is 70261520597. The reversal of 70261520587 is 78502516207.

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

It is a cyclic number.

It is not a de Polignac number, because 70261520587 - 2³ = 70261520579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70261520597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20699989 + ... + 20703382.

It is an arithmetic number, because the mean of its divisors is an integer number (17575731414).

Almost surely, 2^70261520587 is an apocalyptic number.

70261520587 is a deficient number, since it is larger than the sum of its proper divisors (41405069).

70261520587 is a wasteful number, since it uses less digits than its factorization.

70261520587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41405068.

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 70261520587 in words is "seventy billion, two hundred sixty-one million, five hundred twenty thousand, five hundred eighty-seven".