7621198044768 has 864 divisors, whose sum is σ = 27805838860800. Its totient is φ = 1937739386880.

The previous prime is 7621198044703. The next prime is 7621198044769. The reversal of 7621198044768 is 8674408911267.

7621198044768 is a `hidden beast` number, since 7 + 62 + 11 + 98 + 0 + 4 + 476 + 8 = 666.

It is a super-2 number, since 2×7621198044768² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7621198044769) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2475217053 + ... + 2475220131.

Almost surely, 2^{7621198044768} 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 7621198044768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13902919430400).

7621198044768 is an abundant number, since it is smaller than the sum of its proper divisors (20184640816032).

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

7621198044768 is a wasteful number, since it uses less digits than its factorization.

7621198044768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336 (or 3314 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

The spelling of 7621198044768 in words is "seven trillion, six hundred twenty-one billion, one hundred ninety-eight million, forty-four thousand, seven hundred sixty-eight".