84151420881 has 16 divisors (see below), whose sum is σ = 123023406528. Its totient is φ = 50741969600.

The previous prime is 84151420879. The next prime is 84151420883. The reversal of 84151420881 is 18802415148.

It is an interprime number because it is at equal distance from previous prime (84151420879) and next prime (84151420883).

It is a cyclic number.

It is not a de Polignac number, because 84151420881 - 2¹ = 84151420879 is a prime.

It is a super-2 number, since 2×84151420881² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84151420883) 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, 6465690 + ... + 6478691.

It is an arithmetic number, because the mean of its divisors is an integer number (7688962908).

Almost surely, 2^84151420881 is an apocalyptic number.

It is an amenable number.

84151420881 is a deficient number, since it is larger than the sum of its proper divisors (38871985647).

84151420881 is a wasteful number, since it uses less digits than its factorization.

84151420881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12944592.

The product of its (nonzero) digits is 81920, while the sum is 42.

The spelling of 84151420881 in words is "eighty-four billion, one hundred fifty-one million, four hundred twenty thousand, eight hundred eighty-one".