15673979457906 has 96 divisors (see below), whose sum is σ = 39793904285760. Its totient is φ = 4069851408000.

The previous prime is 15673979457901. The next prime is 15673979457907. The reversal of 15673979457906 is 60975497937651.

It is not an unprimeable number, because it can be changed into a prime (15673979457901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9275056 + ... + 10833956.

It is an arithmetic number, because the mean of its divisors is an integer number (414519836310).

Almost surely, 2^{15673979457906} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15673979457906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19896952142880).

15673979457906 is an abundant number, since it is smaller than the sum of its proper divisors (24119924827854).

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

15673979457906 is a wasteful number, since it uses less digits than its factorization.

15673979457906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562040 (or 1562033 counting only the distinct ones).

The product of its (nonzero) digits is 2700507600, while the sum is 78.

The spelling of 15673979457906 in words is "fifteen trillion, six hundred seventy-three billion, nine hundred seventy-nine million, four hundred fifty-seven thousand, nine hundred six".