6780694542 has 64 divisors (see below), whose sum is σ = 14130259968. Its totient is φ = 2166912000.

The previous prime is 6780694541. The next prime is 6780694601. The reversal of 6780694542 is 2454960876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780694541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14837178 + ... + 14837634.

It is an arithmetic number, because the mean of its divisors is an integer number (220785312).

Almost surely, 2^6780694542 is an apocalyptic number.

6780694542 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6780694542 is an abundant number, since it is smaller than the sum of its proper divisors (7349565426).

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

6780694542 is a wasteful number, since it uses less digits than its factorization.

6780694542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The square root of 6780694542 is about 82344.9727791563. The cubic root of 6780694542 is about 1892.7418880220.

The spelling of 6780694542 in words is "six billion, seven hundred eighty million, six hundred ninety-four thousand, five hundred forty-two".