291420451712 has 64 divisors (see below), whose sum is σ = 625798894560. Its totient is φ = 134377850880.

The previous prime is 291420451681. The next prime is 291420451739. The reversal of 291420451712 is 217154024192.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×291420451712² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1738637 + ... + 1898867.

Almost surely, 2^291420451712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 291420451712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312899447280).

291420451712 is an abundant number, since it is smaller than the sum of its proper divisors (334378442848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

291420451712 is a wasteful number, since it uses less digits than its factorization.

291420451712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161351 (or 161339 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 291420451712 in words is "two hundred ninety-one billion, four hundred twenty million, four hundred fifty-one thousand, seven hundred twelve".