70648378691 has 6 divisors (see below), whose sum is σ = 77071920276. Its totient is φ = 64224997400.

The previous prime is 70648378687. The next prime is 70648378721. The reversal of 70648378691 is 19687384607.

It is not a de Polignac number, because 70648378691 - 2² = 70648378687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70648378691.

It is not an unprimeable number, because it can be changed into a prime (70648278691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 841481 + ... + 921621.

It is an arithmetic number, because the mean of its divisors is an integer number (12845320046).

Almost surely, 2^70648378691 is an apocalyptic number.

70648378691 is a deficient number, since it is larger than the sum of its proper divisors (6423541585).

70648378691 is an frugal number, since it uses more digits than its factorization.

70648378691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160293 (or 80152 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 70648378691 in words is "seventy billion, six hundred forty-eight million, three hundred seventy-eight thousand, six hundred ninety-one".