70726137427 has 4 divisors (see below), whose sum is σ = 77155786296. Its totient is φ = 64296488560.

The previous prime is 70726137409. The next prime is 70726137437. The reversal of 70726137427 is 72473162707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72473162707 = 11 ⋅6588469337.

It is a cyclic number.

It is not a de Polignac number, because 70726137427 - 2¹⁹ = 70725613139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70726137437) 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, 3214824418 + ... + 3214824439.

It is an arithmetic number, because the mean of its divisors is an integer number (19288946574).

Almost surely, 2^70726137427 is an apocalyptic number.

70726137427 is a deficient number, since it is larger than the sum of its proper divisors (6429648869).

70726137427 is a wasteful number, since it uses less digits than its factorization.

70726137427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6429648868.

The product of its (nonzero) digits is 691488, while the sum is 46.

The spelling of 70726137427 in words is "seventy billion, seven hundred twenty-six million, one hundred thirty-seven thousand, four hundred twenty-seven".