7949978499132 has 96 divisors (see below), whose sum is σ = 20854576512000. Its totient is φ = 2618850873600.

The previous prime is 7949978499131. The next prime is 7949978499167. The reversal of 7949978499132 is 2319948799497.

7949978499132 is a `hidden beast` number, since 7 + 9 + 4 + 9 + 97 + 8 + 499 + 1 + 32 = 666.

It is a super-2 number, since 2×7949978499132² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7949978499131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2243869 + ... + 4575467.

It is an arithmetic number, because the mean of its divisors is an integer number (217235172000).

Almost surely, 2^{7949978499132} 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 7949978499132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10427288256000).

7949978499132 is an abundant number, since it is smaller than the sum of its proper divisors (12904598012868).

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

7949978499132 is a wasteful number, since it uses less digits than its factorization.

7949978499132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331984 (or 2331976 counting only the distinct ones).

The product of its digits is 2222131968, while the sum is 81.

The spelling of 7949978499132 in words is "seven trillion, nine hundred forty-nine billion, nine hundred seventy-eight million, four hundred ninety-nine thousand, one hundred thirty-two".