70780138007 has 4 divisors (see below), whose sum is σ = 71320444536. Its totient is φ = 70239831480.

The previous prime is 70780137983. The next prime is 70780138043. The reversal of 70780138007 is 70083108707.

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 70780138007 - 2¹⁰ = 70780136983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70780138067) 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, 270153068 + ... + 270153329.

It is an arithmetic number, because the mean of its divisors is an integer number (17830111134).

Almost surely, 2^70780138007 is an apocalyptic number.

70780138007 is a deficient number, since it is larger than the sum of its proper divisors (540306529).

70780138007 is a wasteful number, since it uses less digits than its factorization.

70780138007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540306528.

The product of its (nonzero) digits is 65856, while the sum is 41.

The spelling of 70780138007 in words is "seventy billion, seven hundred eighty million, one hundred thirty-eight thousand, seven".