7661412120 has 64 divisors (see below), whose sum is σ = 23361049440. Its totient is φ = 2009548800.

The previous prime is 7661412113. The next prime is 7661412127. The reversal of 7661412120 is 212141667.

It is an interprime number because it is at equal distance from previous prime (7661412113) and next prime (7661412127).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7661412127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516001 + ... + 530640.

Almost surely, 2^7661412120 is an apocalyptic number.

It is an amenable number.

7661412120 is an abundant number, since it is smaller than the sum of its proper divisors (15699637320).

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

7661412120 is a wasteful number, since it uses less digits than its factorization.

7661412120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046716 (or 1046712 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 7661412120 is about 87529.4928581218. The cubic root of 7661412120 is about 1971.3766494862.

Adding to 7661412120 its reverse (212141667), we get a palindrome (7873553787).

The spelling of 7661412120 in words is "seven billion, six hundred sixty-one million, four hundred twelve thousand, one hundred twenty".