66157090333464 has 256 divisors, whose sum is σ = 190681755264000. Its totient is φ = 18976915077120.

The previous prime is 66157090333421. The next prime is 66157090333507. The reversal of 66157090333464 is 46433309075166.

It is an interprime number because it is at equal distance from previous prime (66157090333421) and next prime (66157090333507).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43101397 + ... + 44609915.

It is an arithmetic number, because the mean of its divisors is an integer number (744850606500).

Almost surely, 2^{66157090333464} 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 66157090333464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95340877632000).

66157090333464 is an abundant number, since it is smaller than the sum of its proper divisors (124524664930536).

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

66157090333464 is a wasteful number, since it uses less digits than its factorization.

66157090333464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508738 (or 1508734 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 57.

The spelling of 66157090333464 in words is "sixty-six trillion, one hundred fifty-seven billion, ninety million, three hundred thirty-three thousand, four hundred sixty-four".