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20494672694 = 2173119444661
BaseRepresentation
bin10011000101100100…
…111110001100110110
31221220022100020121122
4103011210332030312
5313433114011234
613225355543542
71323606562226
oct230544761466
957808306548
1020494672694
118767787a31
123b7b75abb2
131c18015c82
14dc5c92086
157ee3d092e
hex4c593e336

20494672694 has 16 divisors (see below), whose sum is σ = 33600375936. Its totient is φ = 9333436800.

The previous prime is 20494672691. The next prime is 20494672703. The reversal of 20494672694 is 49627649402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20494672691) 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, 9721277 + ... + 9723384.

It is an arithmetic number, because the mean of its divisors is an integer number (2100023496).

Almost surely, 220494672694 is an apocalyptic number.

20494672694 is a deficient number, since it is larger than the sum of its proper divisors (13105703242).

20494672694 is a wasteful number, since it uses less digits than its factorization.

20494672694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19444711.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 20494672694 in words is "twenty billion, four hundred ninety-four million, six hundred seventy-two thousand, six hundred ninety-four".

Divisors: 1 2 17 31 34 62 527 1054 19444661 38889322 330559237 602784491 661118474 1205568982 10247336347 20494672694