951899544640 has 448 divisors, whose sum is σ = 2591462854656. Its totient is φ = 329978880000.

The previous prime is 951899544601. The next prime is 951899544653. The reversal of 951899544640 is 46445998159.

It is a super-2 number, since 2×951899544640² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2875829275 + ... + 2875829605.

Almost surely, 2^951899544640 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 951899544640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1295731427328).

951899544640 is an abundant number, since it is smaller than the sum of its proper divisors (1639563310016).

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

951899544640 is a wasteful number, since it uses less digits than its factorization.

951899544640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 64.

The spelling of 951899544640 in words is "nine hundred fifty-one billion, eight hundred ninety-nine million, five hundred forty-four thousand, six hundred forty".