34521142978 has 48 divisors (see below), whose sum is σ = 63438400800. Its totient is φ = 14008982400.

The previous prime is 34521142961. The next prime is 34521142987. The reversal of 34521142978 is 87924112543.

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, 5212153 + ... + 5218771.

It is an arithmetic number, because the mean of its divisors is an integer number (1321633350).

Almost surely, 2^34521142978 is an apocalyptic number.

34521142978 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

34521142978 is a deficient number, since it is larger than the sum of its proper divisors (28917257822).

34521142978 is a wasteful number, since it uses less digits than its factorization.

34521142978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9455 (or 9448 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The spelling of 34521142978 in words is "thirty-four billion, five hundred twenty-one million, one hundred forty-two thousand, nine hundred seventy-eight".