891401379070 has 32 divisors (see below), whose sum is σ = 1621969409376. Its totient is φ = 352693545600.

The previous prime is 891401379053. The next prime is 891401379079. The reversal of 891401379070 is 70973104198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891401379079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77100 + ... + 1337440.

It is an arithmetic number, because the mean of its divisors is an integer number (50686544043).

Almost surely, 2^891401379070 is an apocalyptic number.

891401379070 is a deficient number, since it is larger than the sum of its proper divisors (730568030306).

891401379070 is a wasteful number, since it uses less digits than its factorization.

891401379070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261116.

The product of its (nonzero) digits is 381024, while the sum is 49.

The spelling of 891401379070 in words is "eight hundred ninety-one billion, four hundred one million, three hundred seventy-nine thousand, seventy".