61122122004 has 24 divisors (see below), whose sum is σ = 143706977568. Its totient is φ = 20218513120.

The previous prime is 61122121987. The next prime is 61122122027. The reversal of 61122122004 is 40022122116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19439307 + ... + 19442450.

It is an arithmetic number, because the mean of its divisors is an integer number (5987790732).

Almost surely, 2^61122122004 is an apocalyptic number.

It is an amenable number.

61122122004 is an abundant number, since it is smaller than the sum of its proper divisors (82584855564).

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

61122122004 is a wasteful number, since it uses less digits than its factorization.

61122122004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38881895 (or 38881893 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The spelling of 61122122004 in words is "sixty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, four".