20437405730 has 16 divisors (see below), whose sum is σ = 42042663360. Its totient is φ = 7007110512.

The previous prime is 20437405717. The next prime is 20437405739. The reversal of 20437405730 is 3750473402.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (20437405739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145981400 + ... + 145981539.

It is an arithmetic number, because the mean of its divisors is an integer number (2627666460).

Almost surely, 2^20437405730 is an apocalyptic number.

20437405730 is an abundant number, since it is smaller than the sum of its proper divisors (21605257630).

20437405730 is a wasteful number, since it uses less digits than its factorization.

20437405730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291962953.

The product of its (nonzero) digits is 70560, while the sum is 35.

The spelling of 20437405730 in words is "twenty billion, four hundred thirty-seven million, four hundred five thousand, seven hundred thirty".