7961211078 has 32 divisors (see below), whose sum is σ = 17089996896. Its totient is φ = 2463418368.

The previous prime is 7961211067. The next prime is 7961211113. The reversal of 7961211078 is 8701121697.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527151 + ... + 542042.

It is an arithmetic number, because the mean of its divisors is an integer number (534062403).

Almost surely, 2^7961211078 is an apocalyptic number.

7961211078 is an abundant number, since it is smaller than the sum of its proper divisors (9128785818).

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

7961211078 is a wasteful number, since it uses less digits than its factorization.

7961211078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069288.

The product of its (nonzero) digits is 42336, while the sum is 42.

The square root of 7961211078 is about 89225.6189555444. The cubic root of 7961211078 is about 1996.7623514775.

The spelling of 7961211078 in words is "seven billion, nine hundred sixty-one million, two hundred eleven thousand, seventy-eight".