6660001542 has 32 divisors (see below), whose sum is σ = 13798239840. Its totient is φ = 2141511680.

The previous prime is 6660001541. The next prime is 6660001559. The reversal of 6660001542 is 2451000666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660001541) 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, 130203 + ... + 173990.

It is an arithmetic number, because the mean of its divisors is an integer number (431194995).

Almost surely, 2^6660001542 is an apocalyptic number.

6660001542 is an abundant number, since it is smaller than the sum of its proper divisors (7138238298).

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

6660001542 is a wasteful number, since it uses less digits than its factorization.

6660001542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304328.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 6660001542 is about 81608.8324999200. The cubic root of 6660001542 is about 1881.4446363787. Note that the first 3 decimals are identical.

The spelling of 6660001542 in words is "six billion, six hundred sixty million, one thousand, five hundred forty-two".