70720540007 has 4 divisors (see below), whose sum is σ = 76160581560. Its totient is φ = 65280498456.

The previous prime is 70720539959. The next prime is 70720540013. The reversal of 70720540007 is 70004502707.

It is a happy number.

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 70720540007 - 2⁸ = 70720539751 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 (70720540087) 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, 2720020757 + ... + 2720020782.

It is an arithmetic number, because the mean of its divisors is an integer number (19040145390).

Almost surely, 2^70720540007 is an apocalyptic number.

70720540007 is a deficient number, since it is larger than the sum of its proper divisors (5440041553).

70720540007 is a wasteful number, since it uses less digits than its factorization.

70720540007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5440041552.

The product of its (nonzero) digits is 13720, while the sum is 32.

The spelling of 70720540007 in words is "seventy billion, seven hundred twenty million, five hundred forty thousand, seven".