61016554220 has 48 divisors (see below), whose sum is σ = 134080930368. Its totient is φ = 23298912000.

The previous prime is 61016554187. The next prime is 61016554231. The reversal of 61016554220 is 2245561016.

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, 738656 + ... + 817095.

It is an arithmetic number, because the mean of its divisors is an integer number (2793352716).

Almost surely, 2^61016554220 is an apocalyptic number.

It is an amenable number.

61016554220 is an abundant number, since it is smaller than the sum of its proper divisors (73064376148).

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

61016554220 is a wasteful number, since it uses less digits than its factorization.

61016554220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555850 (or 1555848 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 61016554220 in words is "sixty-one billion, sixteen million, five hundred fifty-four thousand, two hundred twenty".