2661553204662 has 32 divisors (see below), whose sum is σ = 5823760166784. Its totient is φ = 804206969600.

The previous prime is 2661553204657. The next prime is 2661553204663. The reversal of 2661553204662 is 2664023551662.

It is a super-2 number, since 2×2661553204662² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661553204663) 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, 58084539 + ... + 58130342.

It is an arithmetic number, because the mean of its divisors is an integer number (181992505212).

Almost surely, 2^{2661553204662} is an apocalyptic number.

2661553204662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2661553204662 is an abundant number, since it is smaller than the sum of its proper divisors (3162206962122).

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

2661553204662 is a wasteful number, since it uses less digits than its factorization.

2661553204662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116215244.

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 2661553204662 in words is "two trillion, six hundred sixty-one billion, five hundred fifty-three million, two hundred four thousand, six hundred sixty-two".