2891458031616 has 3120 divisors, whose sum is σ = 12365259413760. Its totient is φ = 662171811840.

The previous prime is 2891458031603. The next prime is 2891458031617. The reversal of 2891458031616 is 6161308541982.

It is a happy number.

2891458031616 is a `hidden beast` number, since 2 + 8 + 9 + 14 + 5 + 8 + 0 + 3 + 1 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2891458031617) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 78147514350 + ... + 78147514386.

Almost surely, 2^{2891458031616} 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 2891458031616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6182629706880).

2891458031616 is an abundant number, since it is smaller than the sum of its proper divisors (9473801382144).

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

2891458031616 is a wasteful number, since it uses less digits than its factorization.

2891458031616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 2891458031616 in words is "two trillion, eight hundred ninety-one billion, four hundred fifty-eight million, thirty-one thousand, six hundred sixteen".