2651556042 has 48 divisors (see below), whose sum is σ = 6003803520. Its totient is φ = 844917696.

The previous prime is 2651556029. The next prime is 2651556071. The reversal of 2651556042 is 2406551562.

2651556042 is a `hidden beast` number, since 2 + 6 + 51 + 5 + 560 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2651555988 and 2651556006.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67 + ... + 72822.

It is an arithmetic number, because the mean of its divisors is an integer number (125079240).

Almost surely, 2^2651556042 is an apocalyptic number.

2651556042 is an abundant number, since it is smaller than the sum of its proper divisors (3352247478).

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

2651556042 is a wasteful number, since it uses less digits than its factorization.

2651556042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72987 (or 72984 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 2651556042 is about 51493.2621029198. The cubic root of 2651556042 is about 1384.0983052033.

The spelling of 2651556042 in words is "two billion, six hundred fifty-one million, five hundred fifty-six thousand, forty-two".